Fatadin, I; Ives, D*; Savory, S J* (2013) Differential carrier phase recovery for QPSK optical coherent systems with integrated tunable lasers. Opt. Express, 21 (8). pp. 10166-10171.

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Abstract

The performance of a differential carrier phase recovery algorithm is investigated for the quadrature phase shift keying (QPSK) modulation format with an integrated tunable laser. The phase noise of the widely-tunable laser measured using a digital coherent receiver is shown to exhibit significant drift compared to a standard distributed feedback (DFB) laser due to enhanced low frequency noise component. The simulated performance of the differential algorithm is compared to the Viterbi-Viterbi phase estimation at different baud rates using the measured phase noise for the integrated tunable laser.

Item Type:	Article
Subjects:	Optical Radiation and Photonics Optical Radiation and Photonics > Optical Comms. And Data
Identification number/DOI:	10.1364/OE.21.010166
Last Modified:	02 Feb 2018 13:14
URI:	http://eprintspublications.npl.co.uk/id/eprint/5805

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